mod_access.c revision b980ad7fdc218b4855cde9f75a747527f50c554d
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * reserved.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Redistribution and use in source and binary forms, with or without
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * modification, are permitted provided that the following conditions
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * are met:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 1. Redistributions of source code must retain the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 2. Redistributions in binary form must reproduce the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the documentation and/or other materials provided with the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * distribution.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 3. The end-user documentation included with the redistribution,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if any, must include the following acknowledgment:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "This product includes software developed by the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache Software Foundation (http://www.apache.org/)."
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Alternately, this acknowledgment may appear in the software itself,
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 4. The names "Apache" and "Apache Software Foundation" must
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * not be used to endorse or promote products derived from this
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * software without prior written permission. For written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission, please contact apache@apache.org.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * 5. Products derived from this software may not be called "Apache",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * nor may "Apache" appear in their name, without prior written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission of the Apache Software Foundation.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
d8500c53789eafefe28d4ace088bf4b912280bf9Tom Gundersen * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * SUCH DAMAGE.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This software consists of voluntary contributions made by many
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * individuals on behalf of the Apache Software Foundation. For more
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * information on the Apache Software Foundation, please see
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * <http://www.apache.org/>.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Portions of this software are based upon public domain software
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * originally written at the National Center for Supercomputing Applications,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * University of Illinois, Urbana-Champaign.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/*
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Security options etc.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Module derived from code originally written by Rob McCool
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_strings.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "apr_network_io.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "ap_config.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "httpd.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_core.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_config.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_log.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "http_request.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_STRING_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <string.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_STRINGS_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <strings.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_NETINET_IN_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <netinet/in.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_ARPA_INET_H
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <arpa/inet.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringenum allowdeny_type {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering T_ENV,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering T_ALL,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering T_IP,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering T_HOST,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering T_FAIL
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering};
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringtypedef struct {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering int limited;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering union {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering char *from;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering struct {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering unsigned long net;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering unsigned long mask;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering } ip;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering } x;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering enum allowdeny_type type;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering} allowdeny;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* things in the 'order' array */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define DENY_THEN_ALLOW 0
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define ALLOW_THEN_DENY 1
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering#define MUTUAL_FAILURE 2
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringtypedef struct {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering int order[METHODS];
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering apr_array_header_t *allows;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering apr_array_header_t *denys;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering} access_dir_conf;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringmodule AP_MODULE_DECLARE_DATA access_module;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic void *create_access_dir_config(apr_pool_t *p, char *dummy)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering{
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering access_dir_conf *conf =
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering (access_dir_conf *) apr_pcalloc(p, sizeof(access_dir_conf));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering int i;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering for (i = 0; i < METHODS; ++i)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering conf->order[i] = DENY_THEN_ALLOW;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering conf->allows = apr_make_array(p, 1, sizeof(allowdeny));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering conf->denys = apr_make_array(p, 1, sizeof(allowdeny));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return (void *) conf;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering}
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic const char *order(cmd_parms *cmd, void *dv, const char *arg)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering{
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering access_dir_conf *d = (access_dir_conf *) dv;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering int i, o;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (!strcasecmp(arg, "allow,deny"))
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering o = ALLOW_THEN_DENY;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering else if (!strcasecmp(arg, "deny,allow"))
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering o = DENY_THEN_ALLOW;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering else if (!strcasecmp(arg, "mutual-failure"))
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering o = MUTUAL_FAILURE;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering else
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return "unknown order";
a6a4f528899b1dab47408733b4a423c66ea40f7aThomas Hindoe Paaboel Andersen
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering for (i = 0; i < METHODS; ++i)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (cmd->limited & (1 << i))
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering d->order[i] = o;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return NULL;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering}
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic int is_ip(const char *host)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering{
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering while ((*host == '.') || apr_isdigit(*host))
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering host++;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return (*host == '\0');
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering}
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic const char *allow_cmd(cmd_parms *cmd, void *dv, const char *from,
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering const char *where_c)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering{
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering access_dir_conf *d = (access_dir_conf *) dv;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering allowdeny *a;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering char *s;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering char *where = apr_pstrdup(cmd->pool, where_c);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (strcasecmp(from, "from"))
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return "allow and deny must be followed by 'from'";
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a = (allowdeny *) apr_push_array(cmd->info ? d->allows : d->denys);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->x.from = where;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->limited = cmd->limited;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (!strncasecmp(where, "env=", 4)) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->type = T_ENV;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->x.from += 4;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering else if (!strcasecmp(where, "all")) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->type = T_ALL;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if ((s = strchr(where, '/'))) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering unsigned long mask;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->type = T_IP;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering /* trample on where, we won't be using it any more */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering *s++ = '\0';
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (!is_ip(where)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering || (a->x.ip.net = apr_inet_addr(where)) == APR_INADDR_NONE) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->type = T_FAIL;
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt return "syntax error in network portion of network/netmask";
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* is_ip just tests if it matches [\d.]+ */
4a62c710b62a5a3c7a8a278b810b9d5b5a0c8f4fMichal Schmidt if (!is_ip(s)) {
4a62c710b62a5a3c7a8a278b810b9d5b5a0c8f4fMichal Schmidt a->type = T_FAIL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "syntax error in mask portion of network/netmask";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* is it in /a.b.c.d form? */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (strchr(s, '.')) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering mask = apr_inet_addr(s);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (mask == APR_INADDR_NONE) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->type = T_FAIL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "syntax error in mask portion of network/netmask";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt else {
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt /* assume it's in /nnn form */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering mask = atoi(s);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (mask > 32 || mask <= 0) {
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering a->type = T_FAIL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "invalid mask in network/netmask";
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering mask = 0xFFFFFFFFUL << (32 - mask);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering mask = htonl(mask);
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering a->x.ip.mask = mask;
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering a->x.ip.net = (a->x.ip.net & mask); /* pjr - This fixes PR 4770 */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering else if (apr_isdigit(*where) && is_ip(where)) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering /* legacy syntax for ip addrs: a.b.c. ==> a.b.c.0/24 for example */
df3fb561b2df486a495a5f0bcc83168bd1860533Lennart Poettering int shift;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering char *t;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int octet;
d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->type = T_IP;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering /* parse components */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering s = where;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a->x.ip.net = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->x.ip.mask = 0;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering shift = 24;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering while (*s) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering t = s;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (!apr_isdigit(*t)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->type = T_FAIL;
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering return "invalid ip address";
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering while (apr_isdigit(*t)) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering ++t;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (*t == '.') {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering *t++ = 0;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if (*t) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering a->type = T_FAIL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "invalid ip address";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (shift < 0) {
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return "invalid ip address, only 4 octets allowed";
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen octet = atoi(s);
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen if (octet < 0 || octet > 255) {
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen a->type = T_FAIL;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return "each octet must be between 0 and 255 inclusive";
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering a->x.ip.net |= octet << shift;
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering a->x.ip.mask |= 0xFFUL << shift;
888943fc6246b2917168fff59380b58b678ba157Lennart Poettering s = t;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen shift -= 8;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen a->x.ip.net = ntohl(a->x.ip.net);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen a->x.ip.mask = ntohl(a->x.ip.mask);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen a->type = T_HOST;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return NULL;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen}
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic char its_an_allow;
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersenstatic const command_rec access_cmds[] =
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_TAKE1("order", order, NULL, OR_LIMIT,
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "'allow,deny', 'deny,allow', or 'mutual-failure'"),
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen AP_INIT_ITERATE2("allow", allow_cmd, &its_an_allow, OR_LIMIT,
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "'from' followed by hostnames or IP-address wildcards"),
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_ITERATE2("deny", allow_cmd, NULL, OR_LIMIT,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "'from' followed by hostnames or IP-address wildcards"),
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering {NULL}
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering};
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen
69fb1176c403e437c4fba763ba242b540c73898fLennart Poetteringstatic int in_domain(const char *domain, const char *what)
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering{
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering int dl = strlen(domain);
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering int wl = strlen(what);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((wl - dl) >= 0) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (strcasecmp(domain, &what[wl - dl]) != 0)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 0;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* Make sure we matched an *entire* subdomain --- if the user
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * said 'allow from good.com', we don't want people from nogood.com
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * to be able to get in.
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (wl == dl)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1; /* matched whole thing */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return (domain[0] == '.' || what[wl - dl - 1] == '.');
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 0;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int find_allowdeny(request_rec *r, apr_array_header_t *a, int method)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen allowdeny *ap = (allowdeny *) a->elts;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int mmask = (1 << method);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int i;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int gothost = 0;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen const char *remotehost = NULL;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen for (i = 0; i < a->nelts; ++i) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (!(mmask & ap[i].limited))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen continue;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen switch (ap[i].type) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen case T_ENV:
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (apr_table_get(r->subprocess_env, ap[i].x.from)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen break;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen case T_ALL:
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen case T_IP:
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* XXX handle IPv6 with separate T_IP6 type or add common
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * address masking operations to APR */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (ap[i].x.ip.net != APR_INADDR_NONE
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen && (r->connection->remote_addr->sa.sin.sin_addr.s_addr
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen & ap[i].x.ip.mask) == ap[i].x.ip.net) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen break;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen case T_HOST:
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (!gothost) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen remotehost = ap_get_remote_host(r->connection, r->per_dir_config,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen REMOTE_DOUBLE_REV);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((remotehost == NULL) || is_ip(remotehost))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen gothost = 1;
144232a8e0ea77eed8c5a456832758681b5b3511Torstein Husebø else
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen gothost = 2;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((gothost == 2) && in_domain(ap[i].x.from, remotehost))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen break;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen case T_FAIL:
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* do nothing? */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen break;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 0;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int check_dir_access(request_rec *r)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int method = r->method_number;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen access_dir_conf *a =
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen (access_dir_conf *)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ap_get_module_config(r->per_dir_config, &access_module);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int ret = OK;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (a->order[method] == ALLOW_THEN_DENY) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ret = HTTP_FORBIDDEN;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (find_allowdeny(r, a->allows, method))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ret = OK;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (find_allowdeny(r, a->denys, method))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ret = HTTP_FORBIDDEN;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (a->order[method] == DENY_THEN_ALLOW) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (find_allowdeny(r, a->denys, method))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ret = HTTP_FORBIDDEN;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (find_allowdeny(r, a->allows, method))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ret = OK;
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (find_allowdeny(r, a->allows, method)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen && !find_allowdeny(r, a->denys, method))
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering ret = OK;
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering else
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen ret = HTTP_FORBIDDEN;
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering }
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen if (ret == HTTP_FORBIDDEN
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen && (ap_satisfies(r) != SATISFY_ANY || !ap_some_auth_required(r))) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen "client denied by server configuration: %s",
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen r->filename);
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen }
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen return ret;
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen}
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersenstatic void register_hooks(apr_pool_t *p)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen{
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen ap_hook_access_checker(check_dir_access,NULL,NULL,APR_HOOK_MIDDLE);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}
69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenmodule AP_MODULE_DECLARE_DATA access_module =
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen{
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen STANDARD20_MODULE_STUFF,
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering create_access_dir_config, /* dir config creater */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering NULL, /* dir merger --- default is to override */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering NULL, /* server config */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering NULL, /* merge server config */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering access_cmds,
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen register_hooks /* register hooks */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering};
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering